EP2766910B1 - Braid and wire harness - Google Patents
Braid and wire harness Download PDFInfo
- Publication number
- EP2766910B1 EP2766910B1 EP12787526.8A EP12787526A EP2766910B1 EP 2766910 B1 EP2766910 B1 EP 2766910B1 EP 12787526 A EP12787526 A EP 12787526A EP 2766910 B1 EP2766910 B1 EP 2766910B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- braid
- element wire
- metal element
- wires
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910052751 metal Inorganic materials 0.000 claims description 87
- 239000002184 metal Substances 0.000 claims description 87
- 229920005989 resin Polymers 0.000 claims description 48
- 239000011347 resin Substances 0.000 claims description 48
- 238000005299 abrasion Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 description 25
- 239000000835 fiber Substances 0.000 description 9
- 238000009954 braiding Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/0207—Wire harnesses
- B60R16/0215—Protecting, fastening and routing means therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0098—Shielding materials for shielding electrical cables
Definitions
- the present disclosure relates to a wire harness which is installed in a vehicle and a braid which constructs the wire harness.
- a wire harness disclosed in PTL (Patent literature) 1 includes a plurality of electric wires and a braid which collectively covers the plurality of electric wires.
- the braid is formed into a tubular shape by using a lot of extra fine metal element wires that have electrical conductivity and braiding these element wires.
- the braid is provided to exert an electromagnetic shielding function for the plurality of electric wires.
- the braid is intended to exert the electromagnetic shielding function as mentioned above, and the braid itself does not have enough abrasion resistance or impact resistance. Therefore, it is necessary to provide an outer covering member outside the braid in accordance with the installation position of the wire harness.
- the number of components that construct the wire harness is increased.
- the weight and the cost are also increased with the increase of the number of components.
- the present disclosure is made in view of the above described circumstances, and the object of the present disclosure is to provide a braid that has the function of an outer covering member as well as an electromagnetic shielding function. Further, another object of the present disclosure is to provide a wire harness including the braid.
- a braid comprising:
- the part including the metal element wire and the drain metal element wire at least abrasion resistance is secured by the part including the resin element wires.
- the resin element wires may have impact resistance as well as abrasion resistance.
- the resin element wires are disposed to surround the metal element wire, the influence of rub (abrasion) or impact will be received by the resin element wires. That is, it becomes hard for the influence of rub (abrasion) or impact to reach the metal element wire, and the electromagnetic shielding function is well maintained.
- each of the metal element wire, the resin element wires and the drain metal element wire is formed of a single thread or a plurality of twisted threads.
- the resin element wire when the resin element wire is made of a single thread, it becomes possible that the braid possesses elasticity.
- the area of the whole cross section increases and the abrasion resistance can be improved.
- each of the twisted threads becomes thinner and it becomes possible that the braid possesses flexibility. If the braid has flexibility, the followability of the braid is improved and the impact resistance can be improved.
- the resin element wires and the drain metal element wire are twisted with the metal element wire which serves as the core wire of each of the element wire bundles.
- variation in the arrangement of the element wires can be controlled by twisting. Further, in the element wire bundles at the time of forming the braid, the contact between the drain metal element wires can be easy.
- the resin element wires are colored with a recognition color of a high voltage system.
- a wire harness comprising:
- the braid which covers one or a plurality of high voltage electrical conductive paths, of the wire harness possesses the function of an outer covering member as well as an electromagnetic shielding function, and an exclusive outer covering member is unnecessary.
- the three kinds of element wires namely, the metal element wire, the resin element wire and the drain metal element wire, are included, an effect is achieved that it is possible to provide a braid which has the function of an outer covering member as well as an electromagnetic shielding function.
- the resin element wires are disposed to surround the outside of the metal element wire, an effect is achieved that it can be hard for the influence of rub (abrasion) or impact to reach the metal element wire.
- an effect is achieved that an electromagnetic shielding function can be maintained even if the above influence reaches the braid.
- each of the metal element wire, the resin element wires and the drain metal element wire is formed of a single thread or a plurality of twisted threads, an effect is achieved that the braid can possess elasticity or the braid can possess flexibility. An effect is achieved that the abrasion resistance or the impact resistance can be improved. According to the present disclosure, an effect is achieved that the braid can be made to conform to the purpose.
- the resin element wires and the drain metal element wire are twisted with the metal element wire which serves as the core wire, effects are achieved that variation in the arrangement of the element wires can be controlled, and in the element wire bundles at the time of forming the braid, the drain metal drains can be electrically connected by ensuring the contact between the drain metal element wires. Therefore, according to the present disclosure, an effect is achieved that functions can be maintained.
- the resin element wires are colored with a recognition color for a high voltage system, an effect is achieved that what is a braid used for a high voltage system can be recognized at first sight even without providing an additional member for recognition.
- the braid which covers one or a plurality of high voltage electrical conductive paths, possesses the function of an outer covering member as well as an electromagnetic shielding function, an effect is achieved that the increase of the number of components of the wire harness can be inhibited. Thereby, an effect is achieved that the weight increase and the cost increase of the wire harness can be inhibited.
- a braid that covers one or a plurality of high voltage electrical conductive paths has the function of an outer covering member as well as an electromagnetic shielding function.
- the braid has the following three types of element wires that construct the braid. That is, the braid includes three kinds of element wires, namely, a metal element wire that has electrical conductivity and serves as a core wire, a plurality of resin element wires that have abrasion resistance and that are disposed to surround the metal element wire, and a drain metal element wire that has electrical conductivity and that is disposed with the resin element wires and contacts with the metal element wire.
- the braid is formed by braiding a lot of element wire bundles so that the drain metal element wires in the element wire bundles contact to each other.
- Figs. 1A and 1B are views showing a braid and a wire harness of the present disclosure.
- Figs. 2A, 2B and 3 are views showing a terminal part of the braid and the wire harness.
- a shielding structure and a wire harness of the present disclosure are applied to a hybrid vehicle (it may be an electric vehicle) is given and described.
- a reference number 21 shows a hybrid vehicle.
- the hybrid vehicle 21 is a vehicle which is driven by an engine 22, a front motor unit 23 and a rear motor unit 24 together, and electric power from a battery 27 (battery pack, battery assembly) is adapted to be supplied to the front motor unit 23 through a front inverter unit 25 and to the rear motor unit 24 through a rear inverter unit 26.
- the engine 22, the front motor unit 23 and the front inverter unit 25 are installed in an engine room 28 at the position of front wheels and the like in the embodiment.
- the rear motor unit 24, the rear inverter unit 26 and the battery 27 are installed in a vehicle rear part 29 of rear wheels and the like (The installation positions shall be an example.
- the position of the battery 27 shall not be particularly limited as long as the battery 27 can be used in the hybrid vehicle 21 or an electric vehicle).
- the front motor unit 23 and the front inverter unit 25 are connected by a high voltage wire harness 30.
- the front inverter unit 25 and the battery 27 are also connected by a high voltage wire harness 31.
- the rear motor unit 24 and the rear inverter unit 26 are also connected by a high voltage wire harness 32.
- the rear inverter unit 26 and the battery 27 are also connected by a high voltage wire harness 33.
- a middle part 34 of the wire harness 31 is arranged at the ground side of a vehicle body floor 35.
- the wire harness 31 is arranged in substantially parallel with the vehicle body floor 35.
- the vehicle body floor 35 is a well-known body and is a so-called panel member, and through hole (The reference numbers are omitted.) are formed at predetermined positions. The through holes become parts to which the wire harness 31 is inserted.
- the wire harness 32 is arranged so that a middle part 36 of the wire harness 32 penetrates through a vehicle body floor 37 in the vehicle rear part 29.
- a through hole into which the wire harness 32 is inserted is formed like the through hole of the wire harness 31.
- a reference number 38 indicates an indoor part.
- the wire harness 30 is connected to the front motor unit 23 and the wire harness 32 is connected to the rear motor unit 24, the wire harness 30 and the wire harness 32 may be called a motor cable or a motor cable device.
- the present disclosure is described as follows by using the wire harness 32 as an example.
- the present disclosure can be applied to not only the wire harness 32, but also the wire harness 30, 31 and 33.
- the wire harness 32 includes three high voltage electric wires 39 (electrical conductive paths), a braid 40 which collectively covers and shields the three high voltage electric wires 39, a motor side connecting part 41 which is provided at one end of the high voltage electric wires 39 and an inverter side connecting part 42 which is provided at the other end.
- the wire harness 32 is constructed without an outer covering member.
- the braid 40 possesses abrasion resistance and impact resistance and functions as an outer covering member (The details are to be described below).
- the high voltage electric wire 39 is a high voltage electrical conductive path including a conductor and an insulator (cover), and is formed to have a length that is necessary for electrical connection.
- the conductor is made of copper, copper alloy, aluminum or aluminum alloy.
- the conductor may be either a conductor structure in which element wires are twisted or a rod-like conductor structure whose cross section is a rectangular shape or a round shape (for example, a conductor structure with a rectangular single core or a round single core, and in this case, the electric wire itself becomes rod-like).
- the high voltage electric wires 39 are used in the present embodiment, but this disclosure shall not be limited to this. That is, it is also possible to provide an insulator to a well-known bus bar to be used as a high voltage electrical conductive path.
- the braid 40 is a pipe-like electromagnetic shielding member (a braided shielding member for electromagnetic wave measures), and is formed into such a shape that the three high voltage electric wires 39 in the embodiment can be covered across the full length.
- the braid 40 is provided to exert an electromagnetic shielding function for the three high voltage electric wires 39.
- a part of the element wires that construct the braid 40 has abrasion resistance and impact resistance.
- the braid 40 would have the function of an outer covering member due to these characteristics.
- the braid 40 is described in more detail as follows.
- the braid 40 is formed by using a plurality of element wire bundles 43, each of which is formed of a bundle of a plurality of extra fine element wires, and braiding the element wire bundles into a tubular shape.
- the braid 40 is formed by braiding the element wire bundles 43 so that the element wire bundles are arranged in parallel in the peripheral direction, and braiding the element wire bundles 43 to be intersected.
- the braid 40 is formed by braiding the element wire bundles 43 so that stitches (not shown in the figure) formed of intersected element wire bundles 43 become small.
- element wires Three kinds of element wires, a metal element wire 44 made of metal that has electrical conductivity, a resin element wire 45 made of synthetic resin that has abrasion resistance, and a drain metal element wire 46 made of metal that has electrical conductivity, are used as element wires that construct the element wire bundle 43.
- the metal element wire 44 is disposed at a position to become the core wire of the element wire bundle 43.
- a plurality of resin element wires 45 are disposed to surround the metal element wire 44.
- the drain metal element wire 46 is disposed together with the plurality of resin element wires 45, and is disposed to contact with the metal element wire 44.
- the metal element wire 44 may include, as an example, a metal fiber which is an annealed copper wire. As illustrated in Fig. 1B , the metal fiber may be a single thread 44a or a plurality of twisted threads 44b. Also, the resin element wire 45 may include, as an example, resin fiber which includes PET resin. Also, the resin fiber may be a single thread 45a or a plurality of twisted threads 45b. Like the metal element wire 44, the drain metal element wire 46 may include, as an example, a metal fiber which is an annealed copper wire. The metal fiber may be a single thread 46a or a plurality of twisted threads 46b.
- the element wire bundle 43 which is a bundle of the above element wires, is formed by making the metal element wire 44 serves as a core wire, and twisting the plurality of resin element wires 45 and the drain metal element wire 46 around the core wire.
- the element wire bundle 43 of the present embodiment is formed by twisting like a rope (This shall be an example).
- the element wire bundle 43 is not limited in the presence/absence of the twisting as long as the drain metal element wire 46 comes in contact with the metal element wire 44 and the drain metal element wire 46 is exposed outwards.
- the metal fiber for the metal element wire 44 may include a plurality of non-twisted threads 44b
- the resin fiber for the resin element wire 45 may include a plurality of non-twisted threads 45b
- the metal fiber for the drain metal element wire 46 may include a plurality of no-twisted threads 46b.
- the element wire bundle 43 is not limited in the presence/absence of the twisting as long as the metal element wire 44 is protected by the plurality of resin element wires 45.
- the resin element wires 45 are colored to a recognition color related to high voltage (This shall be an example).
- the resin element wires 45 are colored to orange using pellets. This is because the wire harness 32 is a high voltage wire harness.
- Terminal parts 47 which are one end and the other end of the above braid 40, are fixed with an appropriate method to metal shells 48 of the motor side connecting part 41 and the inverter side connecting part 42.
- the terminal parts 47 are fixed with welding (This shall be an example).
- the terminal part 47 is fixed by inserting an end 50 of the braid 40 into a body cylindrical part 49 of the metal shell 48 from outside, and after the insertion, welding the periphery of the end 50 on the outer surface of the body cylindrical part 49.
- a reference number 51 of Figs. 1B and 2 shows a welded part.
- the welded part 51 is formed to circle around the outside surface of the body cylindrical part 49.
- the welded part 51 is not limited to circle around the outside surface of the body cylindrical part 49, it is also possible to weld partially in the peripheral direction. Further, the welding position is not limited to the outer surface of the body cylindrical part 49, but may be a planar part 53 of a fixed part 52 (refer to Fig. 3 ). A planar part which is placed between the base end of the body cylindrical part 49 and through holes 54 of the fixed member 52 may correspond to the planar part 53.
- the metal shell 48 is provided as a metal component that has electrical conductivity.
- the metal shells 48 are adapted to make the braid 40 to be able to be electrically connected when the metal shells 48 are fixed (with bolts) to shield cases 55 and 56.
- the braid 40 of the present disclosure is used in the wire harness 32 which is arranged in the hybrid vehicle 1.
- a number of element wire bundles 43 are braided into a tubular shape.
- the braid 40 includes three kinds of element wires, namely, the metal element wire 44 made of metal that has electrical conductivity, the plurality of resin element wires 45 made of synthetic resin which has abrasion resistance and the like, and the drain metal element wire 46 made of metal that has electrical conductivity. While an electromagnetic shielding function is exerted by the part including the metal element wire 44 and the drain metal element wire 46, abrasion resistance and impact resistance are secured by the part including the resin element wires 45. Therefore, an effect is achieved that the braid 40 according to the present disclosure, unlike the traditional example, has the function of an outer covering member as well as an electromagnetic shielding function.
- each of the element wires that construct the element wire bundle 43 may include a single thread (44a, 45a or 46a) or a plurality of twisted threads (44b, 45b or 46b), the following effects are achieved. That is, for example, when the resin element wire 45 includes a single thread 45b, an effect is achieved that the braid 40 can possess elasticity, and because the area of the whole cross section is increased, an effect is achieved that the abrasion resistance can be improved.
- the resin element wire 45 when the resin element wire 45 includes a plurality of twisted threads 45b, each of the twisted threads 45b become thinner, and as a result, effects are achieved that the braid 40 can possess flexibility, and that the impact resistance can be improved since the followability of the braid is improved due to the flexibility.
- the resin element wire 45 since the resin element wire 45 may include a single thread 45a or a plurality of twisted threads 45b, an effect is achieved that the braid can be made to conform to the purpose.
- the plurality of resin element wires 45 are disposed to surround the outside of the metal element wire 44 that becomes the core wire of the element wire bundle 43, an effect is achieved that the influence of rub (abrasion) or impact can be received by the resin element wires 45. That is, it becomes hard for the influence of rub (abrasion) or impact to reach the metal element wire 44, and as a result, an effect is achieved that the electromagnetic shielding function can be well maintained.
- the metal element wire 44 becomes a core wire and the plurality of resin element wires 45 and the drain metal element wire 46 are twisted around the core wire, an effect is achieved that variation in the arrangement of the element wires can be controlled in the element wire bundle 43. Because the plurality of resin element wires 45 and the drain metal element wire 46 are twisted around the core wire, an effect is achieved that in the element wire bundles 43 at the time of forming the braid 40, the drain metal drains 46 can be electrically connected by ensuring the contact between the drain metal element wires 46. Therefore, according to the present disclosure, an effect is achieved that functions can be maintained.
- the resin element wires 45 that construct the element wire bundle 43 are colored with a recognition color (orange) for a high voltage system, an effect is achieved that what is a braid 40 or a wire harness 32 used for a high voltage system can be recognized at first sight even without providing an additional member for recognition.
- the braid 40 which covers the plurality of high voltage electric wires 39, possesses the function of an outer covering member as well as an electromagnetic shielding function, effects are achieved that the increase of the number of components of the wire harness 32 can be inhibited, and that the weight increase and the cost increase can be inhibited.
- the braid can have the function of an outer covering member as well as an electromagnetic shielding function, and a wire harness including the braid can be provided.
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- Details Of Indoor Wiring (AREA)
Description
- The present disclosure relates to a wire harness which is installed in a vehicle and a braid which constructs the wire harness.
- A wire harness disclosed in PTL (Patent literature) 1 includes a plurality of electric wires and a braid which collectively covers the plurality of electric wires. The braid is formed into a tubular shape by using a lot of extra fine metal element wires that have electrical conductivity and braiding these element wires.
- The braid is provided to exert an electromagnetic shielding function for the plurality of electric wires.
- [PTL 1]
JP-A-2003-197037 - The braid is intended to exert the electromagnetic shielding function as mentioned above, and the braid itself does not have enough abrasion resistance or impact resistance. Therefore, it is necessary to provide an outer covering member outside the braid in accordance with the installation position of the wire harness.
- When the outer covering member is provided, the number of components that construct the wire harness is increased. The weight and the cost are also increased with the increase of the number of components.
- The present disclosure is made in view of the above described circumstances, and the object of the present disclosure is to provide a braid that has the function of an outer covering member as well as an electromagnetic shielding function. Further, another object of the present disclosure is to provide a wire harness including the braid.
- In order to achieve the above object, according to the present invention, there is provided a braid comprising:
- a plurality of element wire bundles, each of which is formed of a plurality of element wires, and the plurality of element wire bundles being braided into a tubular shape,
- wherein each of the plurality of element wire bundles includes a metal element wire that has electrical conductivity and serves as a core wire of each of the element wire bundles, a plurality of resin element wires that have abrasion resistance and that are disposed to surround the metal element wire, and a drain metal element wire that has electrical conductivity and that is disposed with the resin element wires and contacts with the metal element wire; and
- wherein the drain metal element wires in the plurality of element wire bundles contact to each other.
- According to the above configuration, while an electromagnetic shielding function is exerted by the part including the metal element wire and the drain metal element wire, at least abrasion resistance is secured by the part including the resin element wires. The resin element wires may have impact resistance as well as abrasion resistance. Further, according to the present disclosure, because the resin element wires are disposed to surround the metal element wire, the influence of rub (abrasion) or impact will be received by the resin element wires. That is, it becomes hard for the influence of rub (abrasion) or impact to reach the metal element wire, and the electromagnetic shielding function is well maintained.
- For example, each of the metal element wire, the resin element wires and the drain metal element wire is formed of a single thread or a plurality of twisted threads.
- According to the above configuration, for example, when the resin element wire is made of a single thread, it becomes possible that the braid possesses elasticity. The area of the whole cross section increases and the abrasion resistance can be improved. On the other hand, when the resin element wire is made a plurality of twisted threads, each of the twisted threads becomes thinner and it becomes possible that the braid possesses flexibility. If the braid has flexibility, the followability of the braid is improved and the impact resistance can be improved.
- For example, the resin element wires and the drain metal element wire are twisted with the metal element wire which serves as the core wire of each of the element wire bundles.
- According to the above configuration, variation in the arrangement of the element wires can be controlled by twisting. Further, in the element wire bundles at the time of forming the braid, the contact between the drain metal element wires can be easy.
- For example, the resin element wires are colored with a recognition color of a high voltage system.
- According to the present disclosure that has such a feature, what is a braid used for a high voltage system is recognized at first sight, and it is not necessary to provide an additional member for recognition when the wire harness is used.
- According to the present disclosure, there is also provided a wire harness comprising:
- the braid according to any one of the above described configurations; and
- one or a plurality of high voltage electrical conductive paths covered by the braid.
- According to the above configuration, the braid, which covers one or a plurality of high voltage electrical conductive paths, of the wire harness possesses the function of an outer covering member as well as an electromagnetic shielding function, and an exclusive outer covering member is unnecessary.
- According to the above configurations, because the three kinds of element wires, namely, the metal element wire, the resin element wire and the drain metal element wire, are included, an effect is achieved that it is possible to provide a braid which has the function of an outer covering member as well as an electromagnetic shielding function. According to the present disclosure, because the resin element wires are disposed to surround the outside of the metal element wire, an effect is achieved that it can be hard for the influence of rub (abrasion) or impact to reach the metal element wire. According to the present disclosure, an effect is achieved that an electromagnetic shielding function can be maintained even if the above influence reaches the braid.
- According to the above disclosure, because each of the metal element wire, the resin element wires and the drain metal element wire is formed of a single thread or a plurality of twisted threads, an effect is achieved that the braid can possess elasticity or the braid can possess flexibility. An effect is achieved that the abrasion resistance or the impact resistance can be improved. According to the present disclosure, an effect is achieved that the braid can be made to conform to the purpose.
- According to the above configuration, because the resin element wires and the drain metal element wire are twisted with the metal element wire which serves as the core wire, effects are achieved that variation in the arrangement of the element wires can be controlled, and in the element wire bundles at the time of forming the braid, the drain metal drains can be electrically connected by ensuring the contact between the drain metal element wires. Therefore, according to the present disclosure, an effect is achieved that functions can be maintained.
- According to the above configuration, because the resin element wires are colored with a recognition color for a high voltage system, an effect is achieved that what is a braid used for a high voltage system can be recognized at first sight even without providing an additional member for recognition.
- According to the above configuration, because the braid, which covers one or a plurality of high voltage electrical conductive paths, possesses the function of an outer covering member as well as an electromagnetic shielding function, an effect is achieved that the increase of the number of components of the wire harness can be inhibited. Thereby, an effect is achieved that the weight increase and the cost increase of the wire harness can be inhibited.
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Figs. 1A and 1B are views showing a braid and a wire harness of the present disclosure.Fig. 1A is a schematic block diagram of a vehicle which shows that the wire harness is arranged, andFig. 1B is a figure which shows the construction of the braid and the wire harness. -
Figs. 2A and 2B are views showing a terminal part of the braid and the wire harness.Fig. 2A is an enlarged perspective view of the terminal part, andFig. 2B is a sectional view of an element wire bundle that constructs the braid. -
Fig. 3 is an exploded perspective view of the terminal part of the braid and the wire harness. - A braid that covers one or a plurality of high voltage electrical conductive paths has the function of an outer covering member as well as an electromagnetic shielding function. In order to have the electromagnetic shielding function and the function of the outer covering member, the braid has the following three types of element wires that construct the braid. That is, the braid includes three kinds of element wires, namely, a metal element wire that has electrical conductivity and serves as a core wire, a plurality of resin element wires that have abrasion resistance and that are disposed to surround the metal element wire, and a drain metal element wire that has electrical conductivity and that is disposed with the resin element wires and contacts with the metal element wire.
- The braid is formed by braiding a lot of element wire bundles so that the drain metal element wires in the element wire bundles contact to each other.
- An embodiment will be described with reference to the figures.
Figs. 1A and 1B are views showing a braid and a wire harness of the present disclosure.Figs. 2A, 2B and3 are views showing a terminal part of the braid and the wire harness. - In the embodiment, an example in which a shielding structure and a wire harness of the present disclosure are applied to a hybrid vehicle (it may be an electric vehicle) is given and described.
- In
Fig. 1A , a reference number 21 shows a hybrid vehicle. The hybrid vehicle 21 is a vehicle which is driven by an engine 22, afront motor unit 23 and arear motor unit 24 together, and electric power from a battery 27 (battery pack, battery assembly) is adapted to be supplied to thefront motor unit 23 through afront inverter unit 25 and to therear motor unit 24 through arear inverter unit 26. The engine 22, thefront motor unit 23 and thefront inverter unit 25 are installed in anengine room 28 at the position of front wheels and the like in the embodiment. Therear motor unit 24, therear inverter unit 26 and thebattery 27 are installed in a vehiclerear part 29 of rear wheels and the like (The installation positions shall be an example. The position of thebattery 27 shall not be particularly limited as long as thebattery 27 can be used in the hybrid vehicle 21 or an electric vehicle). - The
front motor unit 23 and thefront inverter unit 25 are connected by a highvoltage wire harness 30. Thefront inverter unit 25 and thebattery 27 are also connected by a highvoltage wire harness 31. Therear motor unit 24 and therear inverter unit 26 are also connected by a highvoltage wire harness 32. Therear inverter unit 26 and thebattery 27 are also connected by a highvoltage wire harness 33. - A
middle part 34 of thewire harness 31 is arranged at the ground side of avehicle body floor 35. Thewire harness 31 is arranged in substantially parallel with thevehicle body floor 35. Thevehicle body floor 35 is a well-known body and is a so-called panel member, and through hole (The reference numbers are omitted.) are formed at predetermined positions. The through holes become parts to which thewire harness 31 is inserted. - The
wire harness 32 is arranged so that amiddle part 36 of thewire harness 32 penetrates through avehicle body floor 37 in the vehiclerear part 29. A through hole into which thewire harness 32 is inserted is formed like the through hole of thewire harness 31. Areference number 38 indicates an indoor part. - Because the
wire harness 30 is connected to thefront motor unit 23 and thewire harness 32 is connected to therear motor unit 24, thewire harness 30 and thewire harness 32 may be called a motor cable or a motor cable device. - The present disclosure is described as follows by using the
wire harness 32 as an example. The present disclosure can be applied to not only thewire harness 32, but also thewire harness - In
Fig. 1B , thewire harness 32 includes three high voltage electric wires 39 (electrical conductive paths), abraid 40 which collectively covers and shields the three high voltageelectric wires 39, a motorside connecting part 41 which is provided at one end of the high voltageelectric wires 39 and an inverterside connecting part 42 which is provided at the other end. Unlike the related wire harness, thewire harness 32 is constructed without an outer covering member. For this reason, thebraid 40 possesses abrasion resistance and impact resistance and functions as an outer covering member (The details are to be described below). - In
Figs. 1B ,2A and 2b , the high voltageelectric wire 39 is a high voltage electrical conductive path including a conductor and an insulator (cover), and is formed to have a length that is necessary for electrical connection. The conductor is made of copper, copper alloy, aluminum or aluminum alloy. The conductor may be either a conductor structure in which element wires are twisted or a rod-like conductor structure whose cross section is a rectangular shape or a round shape (for example, a conductor structure with a rectangular single core or a round single core, and in this case, the electric wire itself becomes rod-like). - The high voltage
electric wires 39 are used in the present embodiment, but this disclosure shall not be limited to this. That is, it is also possible to provide an insulator to a well-known bus bar to be used as a high voltage electrical conductive path. - The
braid 40 is a pipe-like electromagnetic shielding member (a braided shielding member for electromagnetic wave measures), and is formed into such a shape that the three high voltageelectric wires 39 in the embodiment can be covered across the full length. Thebraid 40 is provided to exert an electromagnetic shielding function for the three high voltageelectric wires 39. A part of the element wires that construct thebraid 40 has abrasion resistance and impact resistance. Thus, thebraid 40 would have the function of an outer covering member due to these characteristics. Thebraid 40 is described in more detail as follows. - The
braid 40 is formed by using a plurality of element wire bundles 43, each of which is formed of a bundle of a plurality of extra fine element wires, and braiding the element wire bundles into a tubular shape. Thebraid 40 is formed by braiding the element wire bundles 43 so that the element wire bundles are arranged in parallel in the peripheral direction, and braiding the element wire bundles 43 to be intersected. In the embodiment, thebraid 40 is formed by braiding the element wire bundles 43 so that stitches (not shown in the figure) formed of intersected element wire bundles 43 become small. - Three kinds of element wires, a
metal element wire 44 made of metal that has electrical conductivity, aresin element wire 45 made of synthetic resin that has abrasion resistance, and a drainmetal element wire 46 made of metal that has electrical conductivity, are used as element wires that construct theelement wire bundle 43. The three kinds of element wires, themetal element wire 44, theresin element wire 45 and the drainmetal element wire 46, are used to be mixed in theelement wire bundle 43 in predetermined numbers. - The
metal element wire 44 is disposed at a position to become the core wire of theelement wire bundle 43. A plurality ofresin element wires 45 are disposed to surround themetal element wire 44. The drainmetal element wire 46 is disposed together with the plurality ofresin element wires 45, and is disposed to contact with themetal element wire 44. - The
metal element wire 44 may include, as an example, a metal fiber which is an annealed copper wire. As illustrated inFig. 1B , the metal fiber may be asingle thread 44a or a plurality oftwisted threads 44b. Also, theresin element wire 45 may include, as an example, resin fiber which includes PET resin. Also, the resin fiber may be asingle thread 45a or a plurality oftwisted threads 45b. Like themetal element wire 44, the drainmetal element wire 46 may include, as an example, a metal fiber which is an annealed copper wire. The metal fiber may be asingle thread 46a or a plurality oftwisted threads 46b. - The
element wire bundle 43, which is a bundle of the above element wires, is formed by making themetal element wire 44 serves as a core wire, and twisting the plurality ofresin element wires 45 and the drainmetal element wire 46 around the core wire. Theelement wire bundle 43 of the present embodiment is formed by twisting like a rope (This shall be an example). - The
element wire bundle 43 is not limited in the presence/absence of the twisting as long as the drainmetal element wire 46 comes in contact with themetal element wire 44 and the drainmetal element wire 46 is exposed outwards. As illustrated inFig. 2B , the metal fiber for themetal element wire 44 may include a plurality ofnon-twisted threads 44b, the resin fiber for theresin element wire 45 may include a plurality ofnon-twisted threads 45b, and the metal fiber for the drainmetal element wire 46 may include a plurality of no-twistedthreads 46b. Likewise, theelement wire bundle 43 is not limited in the presence/absence of the twisting as long as themetal element wire 44 is protected by the plurality ofresin element wires 45. - The
resin element wires 45 are colored to a recognition color related to high voltage (This shall be an example). In particular, theresin element wires 45 are colored to orange using pellets. This is because thewire harness 32 is a high voltage wire harness. There is further a recognition method which winds an orange tape partially around the periphery of thebraid 40. It is cheap to wind the tape. -
Terminal parts 47, which are one end and the other end of theabove braid 40, are fixed with an appropriate method tometal shells 48 of the motorside connecting part 41 and the inverterside connecting part 42. In the embodiment, theterminal parts 47 are fixed with welding (This shall be an example). In particular, as shown inFig. 3 , theterminal part 47 is fixed by inserting anend 50 of thebraid 40 into a bodycylindrical part 49 of themetal shell 48 from outside, and after the insertion, welding the periphery of theend 50 on the outer surface of the bodycylindrical part 49. Areference number 51 ofFigs. 1B and2 shows a welded part. The weldedpart 51 is formed to circle around the outside surface of the bodycylindrical part 49. - The welded
part 51 is not limited to circle around the outside surface of the bodycylindrical part 49, it is also possible to weld partially in the peripheral direction. Further, the welding position is not limited to the outer surface of the bodycylindrical part 49, but may be aplanar part 53 of a fixed part 52 (refer toFig. 3 ). A planar part which is placed between the base end of the bodycylindrical part 49 and throughholes 54 of the fixedmember 52 may correspond to theplanar part 53. - Other than the welding, a fixing method which crimps with a well-known shield ring or a fixing process with insert molding may be applied.
- The
metal shell 48 is provided as a metal component that has electrical conductivity. Themetal shells 48 are adapted to make thebraid 40 to be able to be electrically connected when themetal shells 48 are fixed (with bolts) to shieldcases - As described with reference to
Figs. 1A to 3 , thebraid 40 of the present disclosure is used in thewire harness 32 which is arranged in the hybrid vehicle 1. A number of element wire bundles 43 are braided into a tubular shape. Thebraid 40 includes three kinds of element wires, namely, themetal element wire 44 made of metal that has electrical conductivity, the plurality ofresin element wires 45 made of synthetic resin which has abrasion resistance and the like, and the drainmetal element wire 46 made of metal that has electrical conductivity. While an electromagnetic shielding function is exerted by the part including themetal element wire 44 and the drainmetal element wire 46, abrasion resistance and impact resistance are secured by the part including theresin element wires 45. Therefore, an effect is achieved that thebraid 40 according to the present disclosure, unlike the traditional example, has the function of an outer covering member as well as an electromagnetic shielding function. - Because in the
braid 40 according to the present disclosure, each of the element wires that construct theelement wire bundle 43 may include a single thread (44a, 45a or 46a) or a plurality of twisted threads (44b, 45b or 46b), the following effects are achieved. That is, for example, when theresin element wire 45 includes asingle thread 45b, an effect is achieved that thebraid 40 can possess elasticity, and because the area of the whole cross section is increased, an effect is achieved that the abrasion resistance can be improved. On the other hand, when theresin element wire 45 includes a plurality oftwisted threads 45b, each of thetwisted threads 45b become thinner, and as a result, effects are achieved that thebraid 40 can possess flexibility, and that the impact resistance can be improved since the followability of the braid is improved due to the flexibility. In addition, since theresin element wire 45 may include asingle thread 45a or a plurality oftwisted threads 45b, an effect is achieved that the braid can be made to conform to the purpose. - Because in the
braid 40 according to the present disclosure, the plurality ofresin element wires 45 are disposed to surround the outside of themetal element wire 44 that becomes the core wire of theelement wire bundle 43, an effect is achieved that the influence of rub (abrasion) or impact can be received by theresin element wires 45. That is, it becomes hard for the influence of rub (abrasion) or impact to reach themetal element wire 44, and as a result, an effect is achieved that the electromagnetic shielding function can be well maintained. - Because in the
braid 40 according to the present disclosure, themetal element wire 44 becomes a core wire and the plurality ofresin element wires 45 and the drainmetal element wire 46 are twisted around the core wire, an effect is achieved that variation in the arrangement of the element wires can be controlled in theelement wire bundle 43. Because the plurality ofresin element wires 45 and the drainmetal element wire 46 are twisted around the core wire, an effect is achieved that in the element wire bundles 43 at the time of forming thebraid 40, the drain metal drains 46 can be electrically connected by ensuring the contact between the drainmetal element wires 46. Therefore, according to the present disclosure, an effect is achieved that functions can be maintained. - Because in the
braid 40 according to the present disclosure, theresin element wires 45 that construct theelement wire bundle 43 are colored with a recognition color (orange) for a high voltage system, an effect is achieved that what is abraid 40 or awire harness 32 used for a high voltage system can be recognized at first sight even without providing an additional member for recognition. - Because in the
wire harness 32 according to the present disclosure, thebraid 40, which covers the plurality of high voltageelectric wires 39, possesses the function of an outer covering member as well as an electromagnetic shielding function, effects are achieved that the increase of the number of components of thewire harness 32 can be inhibited, and that the weight increase and the cost increase can be inhibited. - It is apparent that various modifications can be made to the invention without changing the purpose of the invention.
- The present application is based on Japanese Patent Application No.
2011-223574 filed on October 11, 2011 - The braid can have the function of an outer covering member as well as an electromagnetic shielding function, and a wire harness including the braid can be provided.
-
- 21
- hybrid vehicle (automobile)
- 22
- engine
- 23
- front motor unit
- 24
- rear motor unit
- 25
- front inverter unit
- 26
- rear inverter unit
- 27
- battery
- 28
- engine room
- 29
- vehicle rear part
- 30-33
- high voltage wire harness
- 34,36
- middle part
- 35,37
- vehicle body floor
- 38
- indoor part
- 39
- high voltage electric wire (conductive path)
- 40
- braid
- 41
- motor side connecting part
- 42
- inverter side connecting part
- 43
- element wire bundle
- 44
- metal element wire (element wire)
- 45
- resin element wire (element wire)
- 46
- drain metal element wire (element wire)
- 47
- terminal part
- 48
- metal shell
- 49
- body cylindrical part
- 50
- end
- 51
- welded part
- 52
- fixed part
- 53
- planar part
- 54
- through hole
- 55,56
- case
Claims (5)
- A braid (40) for a wire harness comprising:a plurality of element wire bundles (43), each of which is formed of a plurality of element wires, and the plurality of element wire bundles being braided into a tubular shape,wherein each of the plurality of element wire bundles includes a metal element wire (44) that has electrical conductivity and serves as a core wire of each of the element wire bundles, a plurality of resin element wires (45) that have abrasion resistance and that are disposed to surround the metal element wire, and a drain metal element wire (46) that has electrical conductivity and that is disposed with the resin element wires and contacts with the metal element wire; andwherein the drain metal element wires in the plurality of element wire bundles contact to each other.
- The braid according to claim 1, wherein each of the metal element wire, the resin element wires and the drain metal element wire is formed of a single thread or a plurality of twisted threads.
- The braid according to claims 1 or 2, wherein the resin element wires and the drain metal element wire are twisted with the metal element wire which serves as the core wire of each of the element wire bundles.
- The braid according to any one of claims 1 to 3, wherein the resin element wires are colored with a recognition color of a high voltage system.
- A wire harness comprising:the braid according to any one of claims 1 to 4; andone or a plurality of high voltage electrical conductive paths covered by the braid.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011223574A JP5830339B2 (en) | 2011-10-11 | 2011-10-11 | Braiding and wire harness |
PCT/JP2012/076869 WO2013054943A1 (en) | 2011-10-11 | 2012-10-11 | Braid and wire harness |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2766910A1 EP2766910A1 (en) | 2014-08-20 |
EP2766910B1 true EP2766910B1 (en) | 2015-12-30 |
Family
ID=47190065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12787526.8A Active EP2766910B1 (en) | 2011-10-11 | 2012-10-11 | Braid and wire harness |
Country Status (5)
Country | Link |
---|---|
US (1) | US9087620B2 (en) |
EP (1) | EP2766910B1 (en) |
JP (1) | JP5830339B2 (en) |
CN (1) | CN103843076B (en) |
WO (1) | WO2013054943A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013073987A (en) * | 2011-09-27 | 2013-04-22 | Yazaki Corp | Shield structure and wire harness |
JP5971563B2 (en) * | 2013-11-29 | 2016-08-17 | 住友電装株式会社 | Wire shield structure |
JP6379918B2 (en) * | 2014-09-19 | 2018-08-29 | 株式会社豊田自動織機 | Battery module |
JP6352872B2 (en) * | 2015-01-07 | 2018-07-04 | トヨタ自動車株式会社 | Shielded wire connection structure |
DE102015109964B3 (en) * | 2015-06-22 | 2016-11-03 | Lisa Dräxlmaier GmbH | Plug for shielding at least two separate electrical conductors |
JP6565751B2 (en) * | 2016-03-15 | 2019-08-28 | 株式会社豊田自動織機 | Battery module |
US10460853B2 (en) | 2016-05-24 | 2019-10-29 | Flex-Cable | Power cable and bus bar with transitional cross sections |
JP6423389B2 (en) * | 2016-06-29 | 2018-11-14 | 矢崎総業株式会社 | Wire harness |
KR102627602B1 (en) * | 2016-07-05 | 2024-01-24 | 에이치엘만도 주식회사 | Ground Structure Of Motor Shield Wire |
JP7009966B2 (en) * | 2017-12-08 | 2022-01-26 | 住友電装株式会社 | Connector and conductive path |
JP7040946B2 (en) * | 2018-01-15 | 2022-03-23 | 矢崎総業株式会社 | Exterior member of electric wire |
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GB724451A (en) * | 1953-03-19 | 1955-02-23 | Glover & Co Ltd W T | Improvements relating to flexible electric cables |
US4684762A (en) * | 1985-05-17 | 1987-08-04 | Raychem Corp. | Shielding fabric |
JP2816400B2 (en) * | 1990-11-20 | 1998-10-27 | 北川工業株式会社 | Conductive sheet for electromagnetic wave shielding |
JP3445489B2 (en) * | 1998-03-04 | 2003-09-08 | 昭和電線電纜株式会社 | Bypass cable with detection function |
CN1128398C (en) * | 1999-11-19 | 2003-11-19 | 夏云浦 | Chinese 'Latin-Chinese code' input system |
US6639148B2 (en) * | 2001-06-20 | 2003-10-28 | Federal-Mogul Systems Protection Group, Inc. | Extendible drain members for grounding RFI/EMI shielding |
JP2003060386A (en) * | 2001-07-27 | 2003-02-28 | Three M Innovative Properties Co | Electromagnetic wave shielding coating material |
US7288494B2 (en) * | 2001-07-27 | 2007-10-30 | 3M Innovative Properties Company | Electro-magnetic wave shield cover |
JP3713528B2 (en) | 2001-12-26 | 2005-11-09 | 株式会社オートネットワーク技術研究所 | Wire harness for equipment installation |
US7271340B2 (en) * | 2005-01-06 | 2007-09-18 | Precision Interconnect, Inc. | Flexible interconnect cable with insulated shield and method of manufacturing |
FR2916081B1 (en) * | 2007-05-07 | 2009-09-25 | Fed Mogul Systems Prot Group S | ELECTROMAGNETIC PROTECTIVE SHEATH IN TEXTILE. |
JP2009059505A (en) * | 2007-08-30 | 2009-03-19 | Auto Network Gijutsu Kenkyusho:Kk | Shield conductor |
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JP5293644B2 (en) * | 2010-03-02 | 2013-09-18 | 住友電装株式会社 | Wiring harness wiring structure |
JP2011189089A (en) * | 2010-03-17 | 2011-09-29 | Hoya Corp | Endoscope flexible tube |
US20130020122A1 (en) * | 2010-04-30 | 2013-01-24 | Advanced Flexible Circuits Co., Ltd. | Cable bundling structure in slidable engagement with cable |
-
2011
- 2011-10-11 JP JP2011223574A patent/JP5830339B2/en active Active
-
2012
- 2012-10-11 CN CN201280048842.3A patent/CN103843076B/en active Active
- 2012-10-11 WO PCT/JP2012/076869 patent/WO2013054943A1/en active Application Filing
- 2012-10-11 EP EP12787526.8A patent/EP2766910B1/en active Active
-
2014
- 2014-04-11 US US14/250,639 patent/US9087620B2/en active Active
Also Published As
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US20140216805A1 (en) | 2014-08-07 |
US9087620B2 (en) | 2015-07-21 |
EP2766910A1 (en) | 2014-08-20 |
CN103843076A (en) | 2014-06-04 |
JP2013085374A (en) | 2013-05-09 |
WO2013054943A1 (en) | 2013-04-18 |
CN103843076B (en) | 2016-04-13 |
JP5830339B2 (en) | 2015-12-09 |
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